/// <summary>
        /// Se realiza la configuración de autorización
        /// </summary>
        /// <param name="app"></param>
        public void ConfigureOAuth(IAppBuilder app)
        {
            OAuthAuthorizationServerOptions OAuthServerOptions = new OAuthAuthorizationServerOptions()
            {
                AllowInsecureHttp = true,
                TokenEndpointPath = new PathString("/token"),
                AccessTokenExpireTimeSpan = TimeSpan.FromMinutes(30),
                Provider = new SimpleAuthorizationServerProvider(),
                RefreshTokenProvider = new SimpleRefreshTokenProvider()
            };

            // Token Generation
            app.UseOAuthAuthorizationServer(OAuthServerOptions);
            app.UseOAuthBearerAuthentication(new OAuthBearerAuthenticationOptions());
            app.UseExternalSignInCookie(Microsoft.AspNet.Identity.DefaultAuthenticationTypes.ExternalCookie);
            OAuthBearerOptions = new OAuthBearerAuthenticationOptions();

            googleAuthOptions = new GoogleOAuth2AuthenticationOptions()
            {
                ClientId = "185157178718-8qc15td8nefjssrai2md8eiodr151m8u.apps.googleusercontent.com",
                ClientSecret = "tmnYb6S99BJPWVbv45Ha8Mf-",
                Provider = new GoogleAuthProvider()
            };
            app.UseGoogleAuthentication(googleAuthOptions);

        }

        public static void ConfigureAdditionalIdentityProviders(IAppBuilder app, string signInAsType)
        {
            var google = new GoogleOAuth2AuthenticationOptions
            {
                AuthenticationType = "Google",
                SignInAsAuthenticationType = signInAsType,
                ClientId = "client", //"767400843187-8boio83mb57ruogr9af9ut09fkg56b27.apps.googleusercontent.com",
                ClientSecret = "secret"  //"5fWcBT0udKY7_b6E3gEiJlze"
            };
            app.UseGoogleAuthentication(google);

            var fb = new FacebookAuthenticationOptions
            {
                AuthenticationType = "Facebook",
                SignInAsAuthenticationType = signInAsType,
                AppId = "app", //"676607329068058",
                AppSecret = "secret"  //"9d6ab75f921942e61fb43a9b1fc25c63"
            };
            app.UseFacebookAuthentication(fb);

            var twitter = new TwitterAuthenticationOptions
            {
                AuthenticationType = "Twitter",
                SignInAsAuthenticationType = signInAsType,
                ConsumerKey = "consumer",  //"N8r8w7PIepwtZZwtH066kMlmq",
                ConsumerSecret = "secret"  //"df15L2x6kNI50E4PYcHS0ImBQlcGIt6huET8gQN41VFpUCwNjM"
            };
            app.UseTwitterAuthentication(twitter);
        }

        public void ConfigureOAuth(IAppBuilder app)
        {
            app.UseExternalSignInCookie(Microsoft.AspNet.Identity.DefaultAuthenticationTypes.ExternalCookie);
            OAuthBearerOptions = new OAuthBearerAuthenticationOptions();
            OAuthAuthorizationServerOptions OAuthServerOptions = new OAuthAuthorizationServerOptions()
            {
                AllowInsecureHttp = true,
                TokenEndpointPath = new PathString("/token"),
                AccessTokenExpireTimeSpan = TimeSpan.FromMinutes(30),
                Provider = new SimpleAuthorizationServerProvider(),
                RefreshTokenProvider = new SimpleRefreshTokenProvider()
            };

            // Token Generation
            app.UseOAuthAuthorizationServer(OAuthServerOptions);
            app.UseOAuthBearerAuthentication(OAuthBearerOptions);
            //Configure Google External Login
            googleAuthOptions = new GoogleOAuth2AuthenticationOptions()
            {
                ClientId = "936007638974-2ko9tqdmv3ifomlblhlrnninkdoe9bkt.apps.googleusercontent.com",
                ClientSecret = "4_GR4_4JPnglWQOnSnwOZzlV",
                Provider = new GoogleAuthProvider()
            };
            app.UseGoogleAuthentication(googleAuthOptions);
        }

        public void Configuration(IAppBuilder app)
        {
            app.CreatePerOwinContext(AppDbContext.Create);
            app.CreatePerOwinContext<AppUserManager>(AppUserManager.Create);
            app.CreatePerOwinContext<AppSignInManager>(AppSignInManager.Create);

            app.UseCookieAuthentication(new CookieAuthenticationOptions
            {
                AuthenticationType = DefaultAuthenticationTypes.ApplicationCookie,
                LoginPath = new PathString("/Account/Login")
            });
            app.UseExternalSignInCookie(DefaultAuthenticationTypes.ExternalCookie);
            //app.Use((context, next) =>
            //{
            //    var identity = context.Authentication.User.Identity as ClaimsIdentity;
            //    if (identity != null && identity.IsAuthenticated)
            //    {
            //        identity.AddClaim(new Claim(ClaimTypes.Role, "admin"));
            //    }

            //    return next.Invoke();
            //});
            var googleOauthOptions = new GoogleOAuth2AuthenticationOptions
            {
                ClientId = WebConfigurationManager.AppSettings["GoogleClientId"],
                ClientSecret = WebConfigurationManager.AppSettings["GoogleClientSecret"],
                SignInAsAuthenticationType = app.GetDefaultSignInAsAuthenticationType(), //26.08
                Provider = new GoogleOAuth2AuthenticationProvider
                {
                    OnAuthenticated = context =>
                    {
                        var accessToken = context.AccessToken;

                        //var serializedUser = context.User;
                        //var name = context.Name;
                        //var gender = serializedUser.Value<string>("gender");
                        context.Identity.AddClaim(new Claim("urn:google:access_token", accessToken, XmlSchemaString,
                            "Google"));
                        //foreach (var keyVal in context.User)
                        //{
                        //    var claimType = string.Format("urn:google:{0}", keyVal.Key);
                        //    var claimVal = keyVal.Value.ToString();
                        //    if (!context.Identity.HasClaim(claimType, claimVal))
                        //    {
                        //        context.Identity.AddClaim(new Claim(claimType, claimVal,
                        //            XmlSchemaString, "Google"));
                        //    }
                        //}

                        return Task.FromResult(0);
                    }
                }
            };

            googleOauthOptions.Scope.Add("openid");
            googleOauthOptions.Scope.Add("profile");
            googleOauthOptions.Scope.Add("email");
            googleOauthOptions.Scope.Add("https://www.googleapis.com/auth/drive.readonly");
            app.UseGoogleAuthentication(googleOauthOptions);
        }

        private void ConfigureAuth(IAppBuilder app)
        {
            app.UseCookieAuthentication(new CookieAuthenticationOptions
            {
                AuthenticationType = DefaultAuthenticationTypes.ExternalCookie,
                LoginPath = new PathString("/account/login"),
                Provider = new CookieAuthenticationProvider
                {
                    OnApplyRedirect = ctx =>
                    {
                        if (!IsApiRequest(ctx.Request))
                        {
                            ctx.Response.Redirect(ctx.RedirectUri);
                        }
                    }
                }
            });

            app.UseExternalSignInCookie(DefaultAuthenticationTypes.ExternalCookie);

            var provider = new GoogleOAuth2AuthenticationProvider();

            var options = new GoogleOAuth2AuthenticationOptions
            {
                ClientId = ConfigurationManager.AppSettings["ClientId"],
                ClientSecret = ConfigurationManager.AppSettings["ClientSecret"],
                Provider = provider
            };

            app.UseGoogleAuthentication(options);
        }

        // For more information on configuring authentication, please visit http://go.microsoft.com/fwlink/?LinkId=301864
        public void ConfigureAuth(IAppBuilder app)
        {
            // Enable the application to use a cookie to store information for the signed in user
            app.UseCookieAuthentication(new CookieAuthenticationOptions
            {
                AuthenticationType = DefaultAuthenticationTypes.ApplicationCookie,
                LoginPath = new PathString("/Account/Login")
            });
            // Use a cookie to temporarily store information about a user logging in with a third party login provider
            app.UseExternalSignInCookie(DefaultAuthenticationTypes.ExternalCookie);

            // Uncomment the following lines to enable logging in with third party login providers
            //app.UseMicrosoftAccountAuthentication(
            //    clientId: "",
            //    clientSecret: "");

            //app.UseTwitterAuthentication(
            //   consumerKey: "",
            //   consumerSecret: "");

            app.UseFacebookAuthentication(
               appId: "1689954101236608",
               appSecret: "676d9b0e35af6af7c46f3a95d81ca796");

            var googleOAuth2AuthenticationOptions = new GoogleOAuth2AuthenticationOptions
            {
                ClientId = "611179519995-rj11d6cfr591cvfiqsuh82jqc85ok7s9.apps.googleusercontent.com",
                ClientSecret = "NP3DaOGrGMMykrApiQ7QmWox",
            };
            app.UseGoogleAuthentication(googleOAuth2AuthenticationOptions);
            //app.UseGoogleAuthentication();
        }

        public void ConfigureOAuth(IAppBuilder app)
        {
            app.UseExternalSignInCookie(DefaultAuthenticationTypes.ExternalCookie);
            OAuthBearerOptions = new OAuthBearerAuthenticationOptions();

            OAuthAuthorizationServerOptions oAuthServerOptions = new OAuthAuthorizationServerOptions() {
                AllowInsecureHttp = true,
                TokenEndpointPath = new PathString("/token"),
                AccessTokenExpireTimeSpan = TimeSpan.FromMinutes(30),
                Provider = new SimpleAuthorizationServerProvider(),
                RefreshTokenProvider = new SimpleRefreshTokenProvider()
            };

            // Token Generation
            app.UseOAuthAuthorizationServer(oAuthServerOptions);
            app.UseOAuthBearerAuthentication(OAuthBearerOptions);

            //Configure Google External Login
            googleAuthOptions = new GoogleOAuth2AuthenticationOptions() {
                ClientId = "xxx",
                ClientSecret = "xxx",
                Provider = new GoogleAuthProvider()
            };
            app.UseGoogleAuthentication(googleAuthOptions);

            //Configure Facebook External Login
            facebookAuthOptions = new FacebookAuthenticationOptions() {
                AppId = "xxx",
                AppSecret = "xxx",
                Provider = new FacebookAuthProvider()
            };
            app.UseFacebookAuthentication(facebookAuthOptions);
        }

        public static void Configure(IAppBuilder app)
        {
            // Enable the application to use a cookie to store information for the signed in user
            app.UseCookieAuthentication(new CookieAuthenticationOptions
            {
              AuthenticationType = DefaultAuthenticationTypes.ExternalCookie
            });

            // Use a cookie to temporarily store information about a user logging in with a third party login provider
            app.UseExternalSignInCookie(DefaultAuthenticationTypes.ExternalCookie);

            // Configure google authentication
            var options = new GoogleOAuth2AuthenticationOptions()
            {
              ClientId = "your app client id",
              ClientSecret = "your app client secret"
            };

            app.UseGoogleAuthentication(options);

            facebookAuthOptions = new FacebookAuthenticationOptions()
            {
            AppId = "528982800546743",
            AppSecret = "a6ee5ad8448c7c67fcedc72d5a4c501a",
            Provider = new FacebookAuthProvider()
            };

            app.UseFacebookAuthentication(facebookAuthOptions);
        }

        // For more information on configuring authentication, please visit http://go.microsoft.com/fwlink/?LinkId=301864
        public void ConfigureAuth(IAppBuilder app)
        {
            // Enable the application to use a cookie to store information for the signed in user
            // and to use a cookie to temporarily store information about a user logging in with a third party login provider
            app.UseCookieAuthentication(new CookieAuthenticationOptions());
            app.UseExternalSignInCookie(DefaultAuthenticationTypes.ExternalCookie);

            // Enable the application to use bearer tokens to authenticate users
            app.UseOAuthBearerTokens(OAuthOptions);

            // Uncomment the following lines to enable logging in with third party login providers
            //app.UseMicrosoftAccountAuthentication(
            //    clientId: "",
            //    clientSecret: "");

            //app.UseTwitterAuthentication(
            //    consumerKey: "DE9rrDoJOJhbrGR9BBMpyBwa6",
            //    consumerSecret: "bsO1Wz3qx3kUsSIVk0s1ycIWsekDvR8P33m45CDjoU9Qi6YgY1");

            IFacebookAuthenticationFactory facebookAuthenticationFactory = new FacebookAuthenticationFactory();
            FacebookAuthenticationOptions facebookAuthenticationOptions = facebookAuthenticationFactory.CreateAuthenticationOptions();
            app.UseFacebookAuthentication(facebookAuthenticationOptions);

            GoogleOAuth2AuthenticationOptions googleOAuth2AuthenticationOptions = new GoogleOAuth2AuthenticationOptions()
            {
                ClientId = ConfigurationManager.AppSettings["oAuth2.Google.ClientId"],
                ClientSecret = ConfigurationManager.AppSettings["oAuth2.Google.ClientSecret"]
            };
            googleOAuth2AuthenticationOptions.Scope.Add("profile");
            googleOAuth2AuthenticationOptions.Scope.Add("email");

            app.UseGoogleAuthentication(googleOAuth2AuthenticationOptions);
        }

        private void ConfigureOAuth(IAppBuilder app)
        {
            app.UseExternalSignInCookie(Microsoft.AspNet.Identity.DefaultAuthenticationTypes.ExternalCookie);
            OAuthBearerOptions = new OAuthBearerAuthenticationOptions();

            OAuthAuthorizationServerOptions oAuthServerOptions = new OAuthAuthorizationServerOptions()
            {
                AllowInsecureHttp = true,
                TokenEndpointPath = new PathString("/token"),
                AccessTokenExpireTimeSpan = TimeSpan.FromDays(1),
                Provider = new SimpleAuthorizationServerProvider(new AccountRepository())
            };

            GoogleAuthOptions = new GoogleOAuth2AuthenticationOptions()
            {
                ClientId = "592613624399-a3gr6vveaocnptgvv6738rmnk0pb5cev.apps.googleusercontent.com",
                ClientSecret = "FqNKKib_BP7dsNYBoJa8NwUC",
                Provider = new GoogleAuthProvider()
            };
            app.UseGoogleAuthentication(GoogleAuthOptions);

            FacebookAuthOptions = new FacebookAuthenticationOptions()
            {
                AppId = "806191272841558",
                AppSecret = "1a8241e9d46c4a5e393ae51f265a3489",
                Provider = new FacebookAuthProvider()
            };
            app.UseFacebookAuthentication(FacebookAuthOptions);

            // Token Generation
            app.UseOAuthAuthorizationServer(oAuthServerOptions);
            app.UseOAuthBearerAuthentication(OAuthBearerOptions);
        }

        public void GoogleOAuth2Configuration(IAppBuilder app)
        {
            app.UseAuthSignInCookie();

            var option = new GoogleOAuth2AuthenticationOptions()
            {
                ClientId = "581497791735.apps.googleusercontent.com",
                ClientSecret = "-N8rQkJ_MKbhpaxyjdVYbFpO",
            };

            app.UseGoogleAuthentication(option);

            app.Run(async context =>
                {
                    if (context.Authentication.User == null || !context.Authentication.User.Identity.IsAuthenticated)
                    {
                        var authenticationProperties = new AuthenticationProperties();
                        authenticationProperties.Dictionary.Add("access_type", "custom_accessType");
                        authenticationProperties.Dictionary.Add("approval_prompt", "custom_approval_prompt");
                        authenticationProperties.Dictionary.Add("login_hint", "custom_login_hint");

                        context.Authentication.Challenge(authenticationProperties, "Google");
                        await context.Response.WriteAsync("Unauthorized");
                    }
                });
        }

        public ExternalIdentityProviderService WithGoogleAuthentication(string clientId, string clientSecret)
        {
            if (string.IsNullOrWhiteSpace(clientId))
            {
                throw new ArgumentNullException(nameof(clientId));
            }

            if (string.IsNullOrEmpty(clientSecret))
            {
                throw new ArgumentNullException(nameof(clientId));
            }

            configurators.Add((appBuilder, signInAsType) =>
            {
                var google = new GoogleOAuth2AuthenticationOptions
                {
                    AuthenticationType = "Google",
                    SignInAsAuthenticationType = signInAsType,
                    ClientId = clientId,
                    ClientSecret = clientSecret
                };
                appBuilder.UseGoogleAuthentication(google);
            });

            return this;
        }

        public void ConfigureOAuth(IAppBuilder app)
        {
            //use a cookie to temporarily store information about a user logging in with a third party login provider
            app.UseExternalSignInCookie(Microsoft.AspNet.Identity.DefaultAuthenticationTypes.ExternalCookie);
            OAuthBearerOptions = new OAuthBearerAuthenticationOptions();

            OAuthAuthorizationServerOptions OAuthServerOptions = new OAuthAuthorizationServerOptions() {
            
                AllowInsecureHttp = true,
                TokenEndpointPath = new PathString("/token"),
                AccessTokenExpireTimeSpan = TimeSpan.FromMinutes(30),
                Provider = new SimpleAuthorizationServerProvider(),
                RefreshTokenProvider = new SimpleRefreshTokenProvider()
            };

            // Token Generation
            app.UseOAuthAuthorizationServer(OAuthServerOptions);
            app.UseOAuthBearerAuthentication(OAuthBearerOptions);

            //Configure Google External Login
            googleAuthOptions = new GoogleOAuth2AuthenticationOptions()
            {
                ClientId = "xxxxxx",
                ClientSecret = "xxxxxx",
                Provider = new GoogleAuthProvider()
            };
            app.UseGoogleAuthentication(googleAuthOptions);

            //Configure Facebook External Login
            facebookAuthOptions = new FacebookAuthenticationOptions()
            {
                AppId = System.Configuration.ConfigurationManager.AppSettings["FacebookAppId"],
                AppSecret = System.Configuration.ConfigurationManager.AppSettings["FacebookAppSecret"],
                Provider = new FacebookAuthProvider()
            };
            app.UseFacebookAuthentication(facebookAuthOptions);

            //Configure Twitter External Login
           twitterAuthOptions = new TwitterAuthenticationOptions()
            {
                ConsumerKey = System.Configuration.ConfigurationManager.AppSettings["TwitterConsumerKey"],
                ConsumerSecret = System.Configuration.ConfigurationManager.AppSettings["TwitterConsumerSecret"],
                Provider = new TwitterAuthProvider()
            };
           app.UseTwitterAuthentication(twitterAuthOptions);

           //Configure LinkedIn External Login
           linkedinAuthOptions = new LinkedInAuthenticationOptions()
           {

               ClientId = System.Configuration.ConfigurationManager.AppSettings["LinkedInClientId"],
               ClientSecret = System.Configuration.ConfigurationManager.AppSettings["LinkedInSecret"],
               Provider = new LinkedInAuthProvider()
           };
           app.UseLinkedInAuthentication(linkedinAuthOptions);

           

        }

        public static void ConfigureIdentityProviders(IAppBuilder app, string signInAsType)
        {
            var google = new GoogleOAuth2AuthenticationOptions
            {
                AuthenticationType = "Google",
                Caption = "Google",
                SignInAsAuthenticationType = signInAsType,

                ClientId = "767400843187-8boio83mb57ruogr9af9ut09fkg56b27.apps.googleusercontent.com",
                ClientSecret = "5fWcBT0udKY7_b6E3gEiJlze"
            };
            app.UseGoogleAuthentication(google);

            var fb = new FacebookAuthenticationOptions
            {
                AuthenticationType = "Facebook",
                Caption = "Facebook",
                SignInAsAuthenticationType = signInAsType,

                AppId = "676607329068058",
                AppSecret = "9d6ab75f921942e61fb43a9b1fc25c63"
            };
            app.UseFacebookAuthentication(fb);

            var twitter = new TwitterAuthenticationOptions
            {
                AuthenticationType = "Twitter",
                Caption = "Twitter",
                SignInAsAuthenticationType = signInAsType,

                ConsumerKey = "N8r8w7PIepwtZZwtH066kMlmq",
                ConsumerSecret = "df15L2x6kNI50E4PYcHS0ImBQlcGIt6huET8gQN41VFpUCwNjM"
            };
            app.UseTwitterAuthentication(twitter);

            //var adfs = new WsFederationAuthenticationOptions
            //{
            //    AuthenticationType = "adfs",
            //    Caption = "ADFS",
            //    SignInAsAuthenticationType = signInAsType,

            //    MetadataAddress = "https://adfs.leastprivilege.vm/federationmetadata/2007-06/federationmetadata.xml",
            //    Wtrealm = "urn:idsrv3"
            //};
            //app.UseWsFederationAuthentication(adfs);

            var aad = new OpenIdConnectAuthenticationOptions
            {
                AuthenticationType = "aad",
                Caption = "Azure AD",
                SignInAsAuthenticationType = signInAsType,

                Authority = "https://login.windows.net/4ca9cb4c-5e5f-4be9-b700-c532992a3705",
                ClientId = "65bbbda8-8b85-4c9d-81e9-1502330aacba",
                RedirectUri = "https://localhost:44333/core/aadcb"
            };

            app.UseOpenIdConnectAuthentication(aad);
        }

        public void ConfigureAuth(IAppBuilder app)
        {
            // app.CreatePerOwinContext(XcendentAuthContext.Create);
            //app.CreatePerOwinContext<XcendentUserManager>(XcendentUserManager.Create);

            app.UseCors(CorsOptions.AllowAll);

            app.UseCookieAuthentication(new CookieAuthenticationOptions());
            app.UseExternalSignInCookie(DefaultAuthenticationTypes.ExternalCookie);


            PublicClientId = "self";

            OAuthOptions = new OAuthAuthorizationServerOptions
            {
                TokenEndpointPath = new PathString("/Token"),
                Provider = new XcendentOAuthProvider(PublicClientId),
                AuthorizeEndpointPath = new PathString("/api/Account/ExternalLogin"),
                AccessTokenExpireTimeSpan = TimeSpan.FromDays(14),
                // In production mode set AllowInsecureHttp = false
                AllowInsecureHttp = true
            };

            app.UseOAuthBearerTokens(OAuthOptions);


            // Uncomment the following lines to enable logging in with third party login providers
            //app.UseMicrosoftAccountAuthentication(
            //    clientId: "",
            //    clientSecret: "");

            //app.UseTwitterAuthentication(
            //    consumerKey: "",
            //    consumerSecret: "");


            FacebookAuthenticationOptions facebookAuthOptions = new FacebookAuthenticationOptions()
            {
                AppId = "553074264845816",
                AppSecret = "c71200f8ba3d48f92433c9e1844a7239",
                Provider = new FacebookAuthProvider()
            };
            //  facebookAuthOptions.Scope.Clear();
            facebookAuthOptions.Scope.Add("public_profile");
            facebookAuthOptions.Scope.Add("email");
            app.UseFacebookAuthentication(facebookAuthOptions);
            GoogleOAuth2AuthenticationOptions googleOptions = new GoogleOAuth2AuthenticationOptions();
            googleOptions.Scope.Clear();
            googleOptions.Scope.Add("profile");
            googleOptions.Scope.Add("email");
            googleOptions.ClientId = "141496314941-4bc07d10tkmctlrcb0ealjp0n45d04dl.apps.googleusercontent.com";
            googleOptions.ClientSecret = "UWQkdq18I3VB7udh3aBsxOK9";
            googleOptions.Provider = new GoogleAuthProvider();
            googleOptions.AccessType = "online";
            //  googleOptions.AuthenticationMode = Microsoft.Owin.Security.AuthenticationMode.Passive;

            app.UseGoogleAuthentication(googleOptions);
        }

        // For more information on configuring authentication, please visit http://go.microsoft.com/fwlink/?LinkId=301864
        public void ConfigureAuth(IAppBuilder app)
        {
            // Configure the db context, user manager and signin manager to use a single instance per request
            app.CreatePerOwinContext(ApplicationDbContext.Create);
            app.CreatePerOwinContext<ApplicationUserManager>(ApplicationUserManager.Create);
            app.CreatePerOwinContext<ApplicationSignInManager>(ApplicationSignInManager.Create);

            // Enable the application to use a cookie to store information for the signed in user
            // and to use a cookie to temporarily store information about a user logging in with a third party login provider
            // Configure the sign in cookie
            app.UseCookieAuthentication(new CookieAuthenticationOptions
            {
                AuthenticationType = DefaultAuthenticationTypes.ApplicationCookie,
                LoginPath = new PathString("/Account/Login"),
                Provider = new CookieAuthenticationProvider
                {
                    OnException = (context) => { },
                    // Enables the application to validate the security stamp when the user logs in.
                    // This is a security feature which is used when you change a password or add an external login to your account.
                    OnValidateIdentity = SecurityStampValidator.OnValidateIdentity<ApplicationUserManager, ApplicationUser>(
                        validateInterval: TimeSpan.FromMinutes(30),
                        regenerateIdentity: (manager, user) => user.GenerateUserIdentityAsync(manager))
                }
            });
            app.UseExternalSignInCookie(DefaultAuthenticationTypes.ExternalCookie);

            var googleOptions = new GoogleOAuth2AuthenticationOptions()
            {
                ClientId = ConfigurationManager.AppSettings["GoogleClientId"],
                ClientSecret = ConfigurationManager.AppSettings["GoogleClientSecret"]
            };

            //Must specify 'openid email profile' scopes and the app must enable the Google+ API
            //to use the MVC Google OAuth library.
            googleOptions.Scope.Add("openid email profile");

            //Need GmailModify to change labels.
            googleOptions.Scope.Add(GmailService.Scope.GmailModify);
            googleOptions.Provider = new GoogleOAuth2AuthenticationProvider()
            {
                OnAuthenticated = (context) =>
                {
                    context.Identity.AddClaim(new Claim("name", context.Name));
                    context.Identity.AddClaim(new Claim("email", context.Email));
                    context.Identity.AddClaim(new Claim("expiresin", ((int)(context.ExpiresIn.GetValueOrDefault().TotalSeconds)).ToString()));
                    context.Identity.AddClaim(new Claim("accesstoken", context.AccessToken));
                    context.Identity.AddClaim(new Claim("refreshtoken", !string.IsNullOrEmpty(context.RefreshToken) ? context.RefreshToken : string.Empty));
                    return Task.FromResult(0);
                },
            };

            //Request the refresh token by specifying offline.
            //Will only arrive the first time the app is authorized.
            googleOptions.AccessType = "offline";

            googleOptions.SignInAsAuthenticationType = DefaultAuthenticationTypes.ExternalCookie;
            app.UseGoogleAuthentication(googleOptions);
        }

        // For more information on configuring authentication, please visit http://go.microsoft.com/fwlink/?LinkId=301864
        public void ConfigureAuth(IAppBuilder app)
        {
            // Configure the db context, user manager and signin manager to use a single instance per request
            app.CreatePerOwinContext(ApplicationDbContext.Create);
            app.CreatePerOwinContext<ApplicationUserManager>(ApplicationUserManager.Create);
            app.CreatePerOwinContext<ApplicationSignInManager>(ApplicationSignInManager.Create);

            // Enable the application to use a cookie to store information for the signed in user
            // and to use a cookie to temporarily store information about a user logging in with a third party login provider
            // Configure the sign in cookie
            app.UseCookieAuthentication(new CookieAuthenticationOptions
            {
                AuthenticationType = DefaultAuthenticationTypes.ApplicationCookie,
                LoginPath = new PathString("/Account/Login"),
                Provider = new CookieAuthenticationProvider
                {
                    // Enables the application to validate the security stamp when the user logs in.
                    // This is a security feature which is used when you change a password or add an external login to your account.
                    OnValidateIdentity = SecurityStampValidator.OnValidateIdentity<ApplicationUserManager, ApplicationUser>(
                        validateInterval: TimeSpan.FromMinutes(30),
                        regenerateIdentity: (manager, user) => user.GenerateUserIdentityAsync(manager))
                }
            });
            app.UseExternalSignInCookie(DefaultAuthenticationTypes.ExternalCookie);

            // Enables the application to temporarily store user information when they are verifying the second factor in the two-factor authentication process.
            app.UseTwoFactorSignInCookie(DefaultAuthenticationTypes.TwoFactorCookie, TimeSpan.FromMinutes(5));

            // Enables the application to remember the second login verification factor such as phone or email.
            // Once you check this option, your second step of verification during the login process will be remembered on the device where you logged in from.
            // This is similar to the RememberMe option when you log in.
            app.UseTwoFactorRememberBrowserCookie(DefaultAuthenticationTypes.TwoFactorRememberBrowserCookie);

            // Uncomment the following lines to enable logging in with third party login providers
            //app.UseMicrosoftAccountAuthentication(
            //    clientId: "",
            //    clientSecret: "");

            //app.UseTwitterAuthentication(
            //   consumerKey: "",
            //   consumerSecret: "");

            //app.UseFacebookAuthentication(
            //   appId: "",
            //   appSecret: "");

            var googleOAuth2AuthenticationOptions = new GoogleOAuth2AuthenticationOptions
            {
                //CUAHSI - WDC Tools...
                ClientId = "208043537148-ds7a83pm5ssa61kj2jpg7rpojqrqchfj.apps.googleusercontent.com",
                ClientSecret = "ah5IH-1uSPb0LAgusAGy5AZM",
                CallbackPath = new PathString("/signin-google")
            };

            app.UseGoogleAuthentication(googleOAuth2AuthenticationOptions);
        }

 public static void ConfigureAdditionalIdentityProviders(IAppBuilder app, string signInAsType)
 {
     var google = new GoogleOAuth2AuthenticationOptions
     {
         AuthenticationType = "Google",
         SignInAsAuthenticationType = signInAsType,
         ClientId = "767400843187-8boio83mb57ruogr9af9ut09fkg56b27.apps.googleusercontent.com",
         ClientSecret = "5fWcBT0udKY7_b6E3gEiJlze"
     };
     app.UseGoogleAuthentication(google);
 }

        // For more information on configuring authentication, please visit http://go.microsoft.com/fwlink/?LinkId=301864
        public void ConfigureAuth(IAppBuilder app)
        {
            // Configure the db context, user manager and signin manager to use a single instance per request
            app.CreatePerOwinContext(ApplicationDbContext.Create);
            app.CreatePerOwinContext<ApplicationUserManager>(ApplicationUserManager.Create);
            app.CreatePerOwinContext<ApplicationSignInManager>(ApplicationSignInManager.Create);

            // Enable the application to use a cookie to store information for the signed in user
            // and to use a cookie to temporarily store information about a user logging in with a third party login provider
            // Configure the sign in cookie
            app.UseCookieAuthentication(new CookieAuthenticationOptions
            {
                AuthenticationType = DefaultAuthenticationTypes.ApplicationCookie,
                LoginPath = new PathString("/Account/Login"),
                Provider = new CookieAuthenticationProvider
                {
                    // Enables the application to validate the security stamp when the user logs in.
                    // This is a security feature which is used when you change a password or add an external login to your account.  
                    OnValidateIdentity = SecurityStampValidator.OnValidateIdentity<ApplicationUserManager, ApplicationUser>(
                        validateInterval: TimeSpan.FromMinutes(30),
                        regenerateIdentity: (manager, user) => user.GenerateUserIdentityAsync(manager))
                }
            });
            app.UseExternalSignInCookie(DefaultAuthenticationTypes.ExternalCookie);

            // Enables the application to temporarily store user information when they are verifying the second factor in the two-factor authentication process.
            app.UseTwoFactorSignInCookie(DefaultAuthenticationTypes.TwoFactorCookie, TimeSpan.FromMinutes(5));

            // Enables the application to remember the second login verification factor such as phone or email.
            // Once you check this option, your second step of verification during the login process will be remembered on the device where you logged in from.
            // This is similar to the RememberMe option when you log in.
            app.UseTwoFactorRememberBrowserCookie(DefaultAuthenticationTypes.TwoFactorRememberBrowserCookie);

            // Uncomment the following lines to enable logging in with third party login providers
            //app.UseMicrosoftAccountAuthentication(
            //    clientId: "",
            //    clientSecret: "");

            //app.UseTwitterAuthentication(
            //   consumerKey: "",
            //   consumerSecret: "");

            app.UseFacebookAuthentication(
               appId: "1657212351197583",
               appSecret: "577